Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < lv[node].size(); i++){ ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS(int)': main.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < lv[node].size(); i++){ ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:71:5: warning: 'ti' may be used uninitialized in this function [-Wmaybe-uninitialized] for(int ti; ti < t; ti++){ ^~~